Which answer best describes the overall mass of an atom? * 1 point
An atom is so small it has relatively no mass.
An atoms mass is equal to the number of neutrons it has plus the number of electrons
and the number of protons.
An atoms mass is equal to the number of neutrons.
An atoms mass is equal to the number of protons plus the number of neutrons.
The element sodium, Na, has an atomic mass of 23 and atomic number 1 point
mone does one atom of